Hmmm. My very first question is this: how will it be possible for present day Jews to validate any claim of direct descendency from David through Solomon? Is there a Mormon-esque archive of Jewish family lineage currently being kept somewhere? There are families that can trace their lineage to this line. This should not be too surprising. The Kung family in China can trace their ancestry back to K'ung-Fu-Tzu (Confucious) over 2400 years ago.
Any idea of how many Jewish families actually can do that? Are they all on Messiah watch? ;)